./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:33:41,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:33:41,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:33:41,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:33:41,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:33:41,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:33:41,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:33:41,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:33:41,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:33:41,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:33:41,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:33:41,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:33:41,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:33:41,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:33:41,356 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:33:41,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:33:41,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:33:41,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:33:41,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:33:41,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:33:41,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:33:41,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:33:41,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:33:41,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:33:41,360 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:33:41,360 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:33:41,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:33:41,360 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:33:41,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:33:41,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:33:41,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:33:41,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:33:41,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:33:41,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:33:41,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:33:41,363 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:33:41,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:33:41,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:33:41,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:33:41,562 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:33:41,562 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:33:41,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2024-09-24 23:33:42,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:33:42,933 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:33:42,933 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2024-09-24 23:33:42,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cff772c66/9606877506704d7a9d1b56bcb91757bd/FLAG5238c91a1 [2024-09-24 23:33:43,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cff772c66/9606877506704d7a9d1b56bcb91757bd [2024-09-24 23:33:43,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:33:43,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:33:43,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:33:43,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:33:43,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:33:43,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d3b2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43, skipping insertion in model container [2024-09-24 23:33:43,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:33:43,468 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2024-09-24 23:33:43,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:33:43,493 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:33:43,504 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2024-09-24 23:33:43,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:33:43,523 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:33:43,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43 WrapperNode [2024-09-24 23:33:43,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:33:43,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:33:43,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:33:43,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:33:43,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,538 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:33:43,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:33:43,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:33:43,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:33:43,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:33:43,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,556 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:33:43,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:33:43,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:33:43,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:33:43,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:33:43,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (1/1) ... [2024-09-24 23:33:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:33:43,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:43,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-24 23:33:43,596 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-24 23:33:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:33:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:33:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:33:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:33:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:33:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:33:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:33:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:33:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:33:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:33:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:33:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:33:43,672 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:33:43,673 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:33:43,816 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-24 23:33:43,816 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:33:43,829 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:33:43,830 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-24 23:33:43,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:33:43 BoogieIcfgContainer [2024-09-24 23:33:43,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:33:43,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:33:43,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:33:43,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:33:43,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:33:43" (1/3) ... [2024-09-24 23:33:43,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792be198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:33:43, skipping insertion in model container [2024-09-24 23:33:43,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:43" (2/3) ... [2024-09-24 23:33:43,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792be198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:33:43, skipping insertion in model container [2024-09-24 23:33:43,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:33:43" (3/3) ... [2024-09-24 23:33:43,836 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2024-09-24 23:33:43,847 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:33:43,847 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:33:43,886 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:33:43,891 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2aabd438, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:33:43,891 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:33:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:33:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:33:43,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:43,901 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:43,902 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:43,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash 963610160, now seen corresponding path program 1 times [2024-09-24 23:33:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978669234] [2024-09-24 23:33:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:43,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:33:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:33:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:33:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:33:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:33:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:33:44,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978669234] [2024-09-24 23:33:44,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978669234] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:44,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:33:44,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:33:44,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284283506] [2024-09-24 23:33:44,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:44,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:33:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:33:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:33:44,065 INFO L87 Difference]: Start difference. First operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:33:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:44,088 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2024-09-24 23:33:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:33:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-24 23:33:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:44,096 INFO L225 Difference]: With dead ends: 64 [2024-09-24 23:33:44,096 INFO L226 Difference]: Without dead ends: 31 [2024-09-24 23:33:44,099 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:33:44,102 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:44,103 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:33:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-24 23:33:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-24 23:33:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:33:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2024-09-24 23:33:44,161 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 32 [2024-09-24 23:33:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:44,162 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2024-09-24 23:33:44,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:33:44,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-09-24 23:33:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:33:44,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:44,164 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:44,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:33:44,164 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:44,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash -914175556, now seen corresponding path program 1 times [2024-09-24 23:33:44,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:44,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437001393] [2024-09-24 23:33:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:33:44,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247885557] [2024-09-24 23:33:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:44,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:44,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:44,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:33:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:33:44,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:33:44,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:33:44,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:44,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437001393] [2024-09-24 23:33:44,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:33:44,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247885557] [2024-09-24 23:33:44,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247885557] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:33:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:33:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244280581] [2024-09-24 23:33:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:44,365 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:33:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:33:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:33:44,367 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-24 23:33:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:44,434 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-09-24 23:33:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:33:44,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2024-09-24 23:33:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:44,436 INFO L225 Difference]: With dead ends: 47 [2024-09-24 23:33:44,437 INFO L226 Difference]: Without dead ends: 45 [2024-09-24 23:33:44,438 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:33:44,439 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:44,439 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:33:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-24 23:33:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-09-24 23:33:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:33:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-09-24 23:33:44,458 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 32 [2024-09-24 23:33:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:44,458 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-09-24 23:33:44,458 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-24 23:33:44,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-09-24 23:33:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-24 23:33:44,459 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:44,459 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:44,472 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-24 23:33:44,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:44,660 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:44,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash 737940505, now seen corresponding path program 1 times [2024-09-24 23:33:44,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:44,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413698731] [2024-09-24 23:33:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:44,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:33:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908414361] [2024-09-24 23:33:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:44,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:44,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:44,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:44,690 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:33:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:44,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:33:44,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:33:44,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:33:44,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413698731] [2024-09-24 23:33:44,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:33:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908414361] [2024-09-24 23:33:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908414361] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:44,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:33:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:33:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561455517] [2024-09-24 23:33:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:44,772 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:33:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:33:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:33:44,773 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-24 23:33:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:44,826 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-24 23:33:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:33:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2024-09-24 23:33:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:44,827 INFO L225 Difference]: With dead ends: 51 [2024-09-24 23:33:44,827 INFO L226 Difference]: Without dead ends: 49 [2024-09-24 23:33:44,828 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:33:44,829 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:44,830 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:33:44,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-24 23:33:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-09-24 23:33:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:33:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-09-24 23:33:44,839 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 37 [2024-09-24 23:33:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:44,839 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-09-24 23:33:44,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-24 23:33:44,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-09-24 23:33:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-24 23:33:44,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:44,841 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:44,856 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:33:45,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:45,043 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:45,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1385223068, now seen corresponding path program 1 times [2024-09-24 23:33:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793940179] [2024-09-24 23:33:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:33:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468698137] [2024-09-24 23:33:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:45,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:45,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:45,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:33:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:33:45,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-24 23:33:45,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:33:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793940179] [2024-09-24 23:33:45,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:33:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468698137] [2024-09-24 23:33:45,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468698137] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:45,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:33:45,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:33:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744048680] [2024-09-24 23:33:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:45,195 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:33:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:33:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:33:45,196 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-24 23:33:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:45,248 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-09-24 23:33:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:33:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-24 23:33:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:45,251 INFO L225 Difference]: With dead ends: 73 [2024-09-24 23:33:45,251 INFO L226 Difference]: Without dead ends: 69 [2024-09-24 23:33:45,251 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:33:45,254 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:45,254 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:33:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-24 23:33:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-24 23:33:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:33:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-09-24 23:33:45,278 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-09-24 23:33:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:45,279 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-09-24 23:33:45,279 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-24 23:33:45,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-09-24 23:33:45,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-24 23:33:45,280 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:45,280 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:45,292 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-24 23:33:45,480 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:45,481 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:45,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1071635405, now seen corresponding path program 1 times [2024-09-24 23:33:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505133211] [2024-09-24 23:33:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:33:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:33:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:33:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:33:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:33:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:33:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:33:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:33:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-24 23:33:45,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505133211] [2024-09-24 23:33:45,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505133211] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:45,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:33:45,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:33:45,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184908744] [2024-09-24 23:33:45,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:45,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:33:45,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:33:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:33:45,684 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:33:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:45,721 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2024-09-24 23:33:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:33:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 48 [2024-09-24 23:33:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:45,723 INFO L225 Difference]: With dead ends: 75 [2024-09-24 23:33:45,723 INFO L226 Difference]: Without dead ends: 73 [2024-09-24 23:33:45,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:33:45,724 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:45,724 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:33:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-24 23:33:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-09-24 23:33:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:33:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-09-24 23:33:45,741 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 48 [2024-09-24 23:33:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:45,742 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-09-24 23:33:45,742 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:33:45,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-09-24 23:33:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-24 23:33:45,743 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:45,743 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:45,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-24 23:33:45,743 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:45,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:45,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1501538128, now seen corresponding path program 1 times [2024-09-24 23:33:45,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466362131] [2024-09-24 23:33:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:33:45,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144967529] [2024-09-24 23:33:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:45,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:45,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:45,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:45,763 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:33:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:45,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:33:45,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-24 23:33:45,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:33:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466362131] [2024-09-24 23:33:45,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:33:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144967529] [2024-09-24 23:33:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144967529] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:45,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:33:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:33:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961390220] [2024-09-24 23:33:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:45,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:33:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:33:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:33:45,874 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:33:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:45,918 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-09-24 23:33:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:33:45,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-09-24 23:33:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:45,919 INFO L225 Difference]: With dead ends: 83 [2024-09-24 23:33:45,921 INFO L226 Difference]: Without dead ends: 80 [2024-09-24 23:33:45,921 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:33:45,922 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:45,922 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:33:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-24 23:33:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-09-24 23:33:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:33:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-09-24 23:33:45,937 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 50 [2024-09-24 23:33:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:45,938 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-09-24 23:33:45,938 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:33:45,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-09-24 23:33:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-24 23:33:45,941 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:45,941 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:45,957 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:33:46,145 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:46,146 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:46,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash 789508930, now seen corresponding path program 1 times [2024-09-24 23:33:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427077181] [2024-09-24 23:33:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:33:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:33:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:33:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:33:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:33:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:33:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:33:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:33:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:33:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-24 23:33:46,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:46,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427077181] [2024-09-24 23:33:46,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427077181] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:33:46,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667820649] [2024-09-24 23:33:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:46,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:46,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:46,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:46,353 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:33:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:46,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:33:46,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-24 23:33:46,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:33:46,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667820649] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:33:46,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:33:46,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-24 23:33:46,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572274942] [2024-09-24 23:33:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:33:46,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:33:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:33:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:33:46,490 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-24 23:33:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:46,575 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2024-09-24 23:33:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:33:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-09-24 23:33:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:46,577 INFO L225 Difference]: With dead ends: 91 [2024-09-24 23:33:46,577 INFO L226 Difference]: Without dead ends: 87 [2024-09-24 23:33:46,577 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:33:46,578 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:46,578 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:33:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-24 23:33:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-09-24 23:33:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:33:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2024-09-24 23:33:46,589 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 53 [2024-09-24 23:33:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:46,589 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2024-09-24 23:33:46,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-24 23:33:46,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2024-09-24 23:33:46,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-24 23:33:46,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:46,591 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:46,603 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-24 23:33:46,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-24 23:33:46,792 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:46,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1427018501, now seen corresponding path program 2 times [2024-09-24 23:33:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:46,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486106776] [2024-09-24 23:33:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:33:46,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759220510] [2024-09-24 23:33:46,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:33:46,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:46,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:46,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:46,819 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:33:46,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:33:46,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:33:46,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-24 23:33:46,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-24 23:33:47,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:33:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-24 23:33:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486106776] [2024-09-24 23:33:47,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:33:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759220510] [2024-09-24 23:33:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759220510] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:33:47,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:33:47,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 18 [2024-09-24 23:33:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124485979] [2024-09-24 23:33:47,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:33:47,623 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-24 23:33:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-24 23:33:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:33:47,624 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-09-24 23:33:51,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:33:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:52,114 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2024-09-24 23:33:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-24 23:33:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 55 [2024-09-24 23:33:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:52,115 INFO L225 Difference]: With dead ends: 154 [2024-09-24 23:33:52,115 INFO L226 Difference]: Without dead ends: 118 [2024-09-24 23:33:52,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:33:52,116 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 52 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:52,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 238 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 284 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-24 23:33:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-09-24 23:33:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2024-09-24 23:33:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 56 states have internal predecessors, (60), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:33:52,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-09-24 23:33:52,154 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 55 [2024-09-24 23:33:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:52,154 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-09-24 23:33:52,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-09-24 23:33:52,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-09-24 23:33:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-24 23:33:52,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:52,157 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:52,169 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-24 23:33:52,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:52,357 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:52,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1563984878, now seen corresponding path program 1 times [2024-09-24 23:33:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951708281] [2024-09-24 23:33:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:33:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017179181] [2024-09-24 23:33:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:52,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:52,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:52,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:52,371 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:33:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:52,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-24 23:33:52,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-24 23:33:52,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:33:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-24 23:33:52,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951708281] [2024-09-24 23:33:52,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:33:52,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017179181] [2024-09-24 23:33:52,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017179181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:33:52,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:33:52,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-24 23:33:52,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053344795] [2024-09-24 23:33:52,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:33:52,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:33:52,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:33:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:33:52,646 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-09-24 23:33:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:53,161 INFO L93 Difference]: Finished difference Result 119 states and 151 transitions. [2024-09-24 23:33:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:33:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 60 [2024-09-24 23:33:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:53,162 INFO L225 Difference]: With dead ends: 119 [2024-09-24 23:33:53,162 INFO L226 Difference]: Without dead ends: 101 [2024-09-24 23:33:53,163 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:33:53,163 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:53,163 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 195 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-24 23:33:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-24 23:33:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2024-09-24 23:33:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:33:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-09-24 23:33:53,196 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 60 [2024-09-24 23:33:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:53,197 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-09-24 23:33:53,198 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-09-24 23:33:53,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-09-24 23:33:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-24 23:33:53,199 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:53,199 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:53,214 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-24 23:33:53,399 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:53,399 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:53,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1657370914, now seen corresponding path program 1 times [2024-09-24 23:33:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77759398] [2024-09-24 23:33:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:33:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:33:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:33:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:33:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:33:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:33:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:33:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:33:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:33:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:33:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:33:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-09-24 23:33:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77759398] [2024-09-24 23:33:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77759398] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:33:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547859363] [2024-09-24 23:33:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:53,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:53,587 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-24 23:33:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:53,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:33:53,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-09-24 23:33:53,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:33:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-09-24 23:33:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547859363] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:33:53,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:33:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2024-09-24 23:33:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614688756] [2024-09-24 23:33:53,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:33:53,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-24 23:33:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:53,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-24 23:33:53,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:33:53,789 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-24 23:33:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:53,914 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2024-09-24 23:33:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:33:53,915 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 68 [2024-09-24 23:33:53,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:53,917 INFO L225 Difference]: With dead ends: 113 [2024-09-24 23:33:53,917 INFO L226 Difference]: Without dead ends: 85 [2024-09-24 23:33:53,919 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:33:53,920 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:53,921 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 224 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:33:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-24 23:33:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-09-24 23:33:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:33:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2024-09-24 23:33:53,951 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 68 [2024-09-24 23:33:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:53,951 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2024-09-24 23:33:53,951 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-24 23:33:53,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2024-09-24 23:33:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-24 23:33:53,952 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:53,952 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:53,964 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-24 23:33:54,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:54,153 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:54,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1466099106, now seen corresponding path program 2 times [2024-09-24 23:33:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388560577] [2024-09-24 23:33:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:33:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:33:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:33:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:33:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:33:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:33:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:33:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:33:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:33:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:33:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:33:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-09-24 23:33:54,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:54,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388560577] [2024-09-24 23:33:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388560577] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:33:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9338130] [2024-09-24 23:33:54,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:33:54,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:54,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:54,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:54,300 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-24 23:33:54,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:33:54,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:33:54,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:33:54,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-09-24 23:33:54,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:33:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-09-24 23:33:54,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9338130] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:33:54,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:33:54,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-09-24 23:33:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515623491] [2024-09-24 23:33:54,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:33:54,500 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-24 23:33:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-24 23:33:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:33:54,501 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-09-24 23:33:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:54,629 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2024-09-24 23:33:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-24 23:33:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 68 [2024-09-24 23:33:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:54,630 INFO L225 Difference]: With dead ends: 103 [2024-09-24 23:33:54,630 INFO L226 Difference]: Without dead ends: 60 [2024-09-24 23:33:54,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:33:54,631 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:54,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 280 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:33:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-24 23:33:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-24 23:33:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.0) internal successors, (36), 36 states have internal predecessors, (36), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:33:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-09-24 23:33:54,637 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 68 [2024-09-24 23:33:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:54,637 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-09-24 23:33:54,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-09-24 23:33:54,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-09-24 23:33:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-24 23:33:54,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:33:54,638 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:54,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-24 23:33:54,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-24 23:33:54,839 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:33:54,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -335668690, now seen corresponding path program 1 times [2024-09-24 23:33:54,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:33:54,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267426081] [2024-09-24 23:33:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:54,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:33:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:33:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:33:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:33:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:33:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:33:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:33:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:33:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:33:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:33:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:33:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:33:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:33:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-24 23:33:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:33:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267426081] [2024-09-24 23:33:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267426081] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:33:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156322534] [2024-09-24 23:33:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:33:54,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:33:54,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:33:54,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:33:54,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-24 23:33:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:33:55,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:33:55,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:33:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-24 23:33:55,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:33:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-24 23:33:55,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156322534] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:33:55,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:33:55,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-24 23:33:55,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821842969] [2024-09-24 23:33:55,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:33:55,110 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:33:55,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:33:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:33:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:33:55,111 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-24 23:33:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:33:55,208 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-09-24 23:33:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:33:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 71 [2024-09-24 23:33:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:33:55,209 INFO L225 Difference]: With dead ends: 60 [2024-09-24 23:33:55,210 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:33:55,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:33:55,211 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:33:55,211 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 144 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:33:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:33:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:33:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 23:33:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:33:55,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-09-24 23:33:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:33:55,211 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:33:55,211 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-24 23:33:55,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:33:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:33:55,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:33:55,214 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:33:55,230 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-24 23:33:55,415 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-24 23:33:55,418 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:33:55,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:33:56,639 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:33:56,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:33:56 BoogieIcfgContainer [2024-09-24 23:33:56,652 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:33:56,653 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:33:56,653 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:33:56,653 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:33:56,653 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:33:43" (3/4) ... [2024-09-24 23:33:56,656 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:33:56,698 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:33:56,698 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:33:56,699 INFO L158 Benchmark]: Toolchain (without parser) took 13365.46ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 90.0MB in the beginning and 132.6MB in the end (delta: -42.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:33:56,699 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:33:56,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.05ms. Allocated memory is still 159.4MB. Free memory was 89.8MB in the beginning and 78.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:33:56,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.94ms. Allocated memory is still 159.4MB. Free memory was 78.0MB in the beginning and 77.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:33:56,699 INFO L158 Benchmark]: Boogie Preprocessor took 25.87ms. Allocated memory is still 159.4MB. Free memory was 77.0MB in the beginning and 75.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:33:56,700 INFO L158 Benchmark]: RCFGBuilder took 264.78ms. Allocated memory is still 159.4MB. Free memory was 75.3MB in the beginning and 126.6MB in the end (delta: -51.2MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2024-09-24 23:33:56,700 INFO L158 Benchmark]: TraceAbstraction took 12820.90ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 125.9MB in the beginning and 135.7MB in the end (delta: -9.8MB). Peak memory consumption was 109.4MB. Max. memory is 16.1GB. [2024-09-24 23:33:56,700 INFO L158 Benchmark]: Witness Printer took 45.87ms. Allocated memory is still 199.2MB. Free memory was 135.7MB in the beginning and 132.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:33:56,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.05ms. Allocated memory is still 159.4MB. Free memory was 89.8MB in the beginning and 78.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.94ms. Allocated memory is still 159.4MB. Free memory was 78.0MB in the beginning and 77.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.87ms. Allocated memory is still 159.4MB. Free memory was 77.0MB in the beginning and 75.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 264.78ms. Allocated memory is still 159.4MB. Free memory was 75.3MB in the beginning and 126.6MB in the end (delta: -51.2MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12820.90ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 125.9MB in the beginning and 135.7MB in the end (delta: -9.8MB). Peak memory consumption was 109.4MB. Max. memory is 16.1GB. * Witness Printer took 45.87ms. Allocated memory is still 199.2MB. Free memory was 135.7MB in the beginning and 132.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 1943 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1531 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1014 IncrementalHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 412 mSDtfsCounter, 1014 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1030 GetRequests, 912 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=8, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1152 NumberOfCodeBlocks, 1152 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1177 ConstructedInterpolants, 0 QuantifiedInterpolants, 3143 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1318 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 1438/1595 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((r == 0) && (y <= 2)) && (s == 1)) && (0 <= x)) && (b == y)) && (q == 0)) && (1 <= y)) && (a == x)) && (x <= 2)) && (p == 1)) || (((((((((((__int128) a + ((long long) y * 2)) == ((__int128) b + x)) && (((__int128) r + 1) == 0)) && (s == 1)) && (1 <= a)) && (b == y)) && (q == 0)) && (1 <= y)) && (x <= 2)) && (p == 1))) || ((((((((((r == 0) && (a <= 1)) && (b == (((__int128) q * x) + ((__int128) y * s)))) && (y <= 2)) && (s == 1)) && (0 <= x)) && (1 <= b)) && (1 <= y)) && (a == x)) && (p == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:33:56,716 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE